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Security software-as-a-service specialist Qualys has branched out from vulnerability assessment and policy compliance for corporate networks with a cloud-based website protection service.

QualysGuard Web Application Firewall (WAF) is designed to protect sites from threats including SQL injection and DDoS. The service is also designed to improve website performance through caching, compression and content optimisation. The service, which will compete against existing offerings from the likes of Akamai, adds to Qualys's existing Web Application Service.

"The existing service is a scanning/assessment tool," explained Qualys director of engineering Ivan Ristic. "The WAF is a real-time monitoring and protection tool. They're complementary."

Cloud security is unsurprisingly a big theme of this year's RSA Conference. Other significant launches include a disaster-recovery software-as-a-service offering from CA, targeted at SMEs. ARCserve D2D on Demand is a hybrid service that combines on-site data protection with a cloud-based service, built using Microsoft Azure's platform.

Elsewhere, vulnerability management firm Secunia launched a revamped version of its freebie patch management tool for consumers. Secunia Personal Software Inspector (PSI) version 3.0 includes more automated patching features and a dramatically simplified user interface. The software, which helps keep Windows users up to date with the latest patches from both Microsoft and third-party developers, is due to remain in beta trial until June, can be downloaded here. ®